Application and characteristics of laser production in lithium battery processing

The application and characteristics of laser production in lithium battery processing. The application and characteristics of laser production in lithium battery processing. The lithium battery processing process is a typical roll-to-roll process, which includes two processes: film to a single battery, and single lithium battery packaging to a battery system. High requirements for precision, controllability and quality of production equipment. This article talks about the application of laser production in lithium battery processing on the small makeup of Haobo battery. Application of laser production in lithium battery processing Generally speaking, there are three types of lithium battery manufacturing equipment: front-end equipment, mid-end equipment and back-end equipment. The accuracy and automation of the equipment will directly affect the processing capacity and consistency of the product. As a substitute for traditional welding technology, laser production technology has been widely used in lithium battery processing equipment. Cutting aluminum foil is to cut a roll of metal foil into thin strips along the long side according to the design of the lithium battery. Suitable for this link is the infrared pulse laser, which cuts the electrode coating at high speed and high quality. Assuming more precise requirements for cutting width and quality, pulsed green light and ultraviolet light can also be considered. Foil cutting The metal foil cutting process refers to the planning of the lithium battery, cutting the thin strips of the anode film and the cathode film into the required shape. According to the different methods of the lithium battery and whether the metal foil coil is uncoated, you can choose or adjust the beam to cut the coating or only cut the metal foil. The laser applicable to this connecting rod is the same as the aluminum foil cutting connecting rod. Label cleaning In some cases, it is necessary to remove graphite and lithium metal oxides to expose bare copper or aluminum foil labels. The key to this process is to remove the metal foil from the coating material without damaging the metal. Pulsed infrared lasers are most suitable for this link. Barrier is similar to aluminum foil cutting, and the film should be cut into the required shape according to the lithium battery plan. Since the barrier is composed of organic compounds, pulsed ultraviolet lasers are the best choice. Laser technology is becoming the best way to produce lithium batteries. The production process of lithium batteries puts forward higher requirements on the accuracy, controllability and quality of production equipment. In the process of using the die-cutting knife, there will be unpreventable wear and tear, which will cause dust, burrs, and dangerous problems such as battery overheating, short circuit, and knocking. In order to prevent danger, laser production is more suitable. Compared with traditional production, laser has the advantages of no wear, flexible cutting shape, edge quality control, high precision, and low operating cost. Compared with the traditional die-cutting method, it has high power and no consumables for laser online cutting, which greatly reduces the cost; other, the processing speed is faster, which can greatly increase the processing capacity; third, the flexibility is high, and the size can be easily controlled during the processing. Taken together, there is no pollution, no consumables, and faster laser cleaning has begun to replace traditional chemical methods for the processing of lithium batteries, which will become the open direction of lithium battery operations in the future. The characteristics of laser production of lithium batteries 1. Fast speed, large depth, and small deformation. It can be welded at room temperature or under special conditions, and the welding equipment is simple. For example, the laser beam cannot be deflected by the electromagnetic field; the laser can be welded in a vacuum, air or gas environment, and it can also be welded through glass or a material that is transparent to the beam. 3. Welding of refractory materials such as titanium, quartz, etc., and can be used for welding of relative materials with good results. 4. After laser mobilization, the power density is high. When welding high-power equipment, the aspect ratio can reach 5:1, and the height can reach 10:1. 5. Micro welding is possible. The laser beam can be adjusted to obtain a small spot, and can be positioned, and can be used for mass automated processing of welding of micro and small workpieces. Disclaimer: Some pictures and content of articles published on this site are from the Internet, if there is any infringement, please contact to delete. Previous: Brief analysis of the advantages and disadvantages of lithium batteries